Diesel Mechanic Invoice Template

A diesel mechanic invoice documents diesel engine service including diagnostics, fuel system work, turbocharger repair, DPF and DEF system service, and heavy-duty drivetrain repairs for pickup trucks, commercial vehicles, and heavy equipment. Generate detailed diesel repair invoices with NetInvoice to bill for specialized truck and equipment work.

Why this invoice template matters

Diesel repairs are expensive and technically complex, requiring detailed invoicing to justify costs to fleet managers and truck owners. Modern diesel emissions systems (DPF, DEF, EGR) add thousands in potential repair costs that customers often don't expect. Invoices must separate engine mechanical work from emissions diagnostics, show why diesel parts cost more than gas equivalents, and document the specialized diagnostic equipment required for modern diesel troubleshooting. Professional documentation helps commercial clients track fleet maintenance costs per vehicle, justify repairs versus replacement decisions, and maintain warranty compliance on expensive diesel powertrains. Clear records also support uptime guarantees critical for commercial operations.

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Example line items

DescriptionQtyUnitUnit PriceTotal
Diesel engine diagnostic (computer scan)2hours$145.00$290.00
DPF (diesel particulate filter) cleaning1ea$485.00$485.00
DEF injector replacement1injector$325.00$325.00
Fuel filter replacement (primary/secondary)2filters$65.00$130.00
Oil and filter change (15W-40 heavy duty)12quarts$9.50$114.00
Turbocharger actuator replacement1actuator$485.00$485.00
Forced DPF regeneration1service$250.00$250.00
Total:$2079.00

Common invoice notes

  • Check engine light caused by failed DEF injector - emissions system now functioning.
  • DPF was 85% loaded - forced regen completed successfully.
  • Recommend premium diesel fuel to reduce injector fouling.

How to create this invoice

  1. 1Document vehicle make, model, engine type, and mileage.
  2. 2List diagnostic codes and testing procedures performed.
  3. 3Detail emissions system work: DPF, DEF, EGR components.
  4. 4Include fuel system service: filters, injectors, pumps.
  5. 5Add engine mechanical repairs with diesel-specific parts.
  6. 6Document fluid services: oil capacity, diesel coolant, DEF.
  7. 7Note forced regens or computer reprogramming performed.

Frequently Asked Questions

How much does diesel truck repair cost?
Diesel repair costs: diagnostic $150-$300, DPF cleaning $400-$800, DPF replacement $2,000-$4,000, injector replacement $300-$600 each, turbocharger $1,500-$3,000, oil change $150-$300. Emissions repairs are most expensive due to complex systems and costly parts.
Should diesel invoices separate engine work from emissions systems?
Yes, clearly separate engine mechanical work from emissions diagnostics and repairs (DPF, DEF, EGR, turbo). Customers need to understand emissions complexity and cost. Emissions repairs are often warranty-eligible - separate billing helps track coverage.
How do diesel mechanics charge for DPF service?
DPF cleaning costs $400-$800, forced regeneration $200-$400, DPF replacement $2,000-$4,000+. Document soot loading percentage, ash accumulation, and regen history. Explain cleaning versus replacement criteria based on mileage and condition.
What should diesel service invoices document for fleet vehicles?
Include vehicle number, unit ID, current mileage, hours (if equipped), service history notes, PM schedule compliance, and next service due. Fleet managers need detailed records for cost-per-mile tracking and scheduling preventive maintenance.

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